1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdce428c4f9b0c575fea23c521f512ce3d8fa85f5b84ed50f849868d26b4ec9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4018ec9d-95b9-4352-83df-25b9480ee57d.json and https://artists.proofprofile.net/proofs/artist/4018ec9d-95b9-4352-83df-25b9480ee57d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf254e064b56069457f0612cd039da699a0554ec4eaedfec208fc6b24cfa147b6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2038037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17072b8912938bc65f51824360fdec7be5e311c8f070dbda9953f620093776b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2038035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f908de206cdb097189eebdbcf241b4892b1509e6acd0af6b739c7b22d332ac9. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:57:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2038036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc80eacf44fb298c32762481c8a2174fdbcbcd07503f9303472a78ea67c0770. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2038038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e717418f7caf73506e6a16a95508e50f5deb91e30606196418d10e489bd505. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX2133959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab63328b26ec6a98d3613d1b798ff932703df857e3beadac1b83320e0cb9f96. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX2133962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97b851424b3e08f9276893e9a44c711abf2c41f76fe083ada09b36433ea1a2a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX2133961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe736f2d2ab354d01c2a0b770ce84157392e4404be2984fd512a5113ca910ed. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX2133242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aeb27098a925518c1bd9afc3055a1db10d714d1ffa33286465cd138c65423cd. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX2133965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716177c19e8c97286dc215d17a5ae5b0994516ec4dc6eced8978d4a210b5a365. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNC2115016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8913fb93b5de6e18f08f0029b907050a6d25f6b021a415a04e3491b9c0b6d2a9. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNC2112934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d24b0186c5d6495f896d34ce5e11ef5deef4384825fbf76e7135b233ec7aef. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6H2120199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6d700a071239fb6701efbe63bab3bfc47200971bfa3c265365a8bc6b4f1e92. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWT2143364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de82c82315db81057b94583ca985abe5c872394c3de22f6706efb8ab8544894. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWT2146483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9b47120792e3805f0d77cbcc4f6768e48458a0b52165b844721f9d917c73c9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ42222012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42701864180bd9f208f82260a0ea1aa3ae3c29b8f3843f47e581274633df1d19. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52247987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45810ee954c4ec78ba8acdf3dcabd120fe09918f41420a86e088a3150c48c31c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN62207928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d3c261fb1a4eb69e3c1769778160982b841162480fd1212adca8698064067a. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ42329615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe798bf845a9bbda042462d721392ea191859fb7910b3d9ad25ae7e6bd409444f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6N2392855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457c9819c4891680c6fb83272c2592e990a031b2b3000bc8f494467221cc1628. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ72472732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0c546b5e3ff5b927f5e37b5dcee77ec1fe60edf7c201b1b6b8c5ae0dd7fd54. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6P2493359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39af95afaddea3365547b94e7008fcd2ec9fa202e304def506f9de1d0568c33. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2412533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c97b7cbc2fcf0cf86b97f7af644f1601b8b15e3d6400244fd0f25ec9cf509bb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INS4J2577023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c84243fe07ebad4544355404f9d0c7f5cd0a93202b3bee84c67300d1328a33d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2574133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129e1cbc3a243c6e3b401e0c195302c120127fb8884d1b95f995c2924b5d68bf. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INS4J2577030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4519f78c7be11ec7d2daed97e5ab8620ceaaa860a3a738f221fca1a8b4c24ae3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INS4J2577033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce7f848a207cea0912d4955575ee413d4acc0e3da3fb356967f4f2af7ab12d9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6M2278765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f52ee011f97c9859c94cbe6a406e4dd9f6f5414487117a37a4ccbbe47f4976. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWW2359773.